It can be difficult to navigate the complicated terrain of Kubernetes deployment across numerous contexts. However, with the powerful Kustomize tool at your disposal, you have the ability to easily and precisely manage Kubernetes manifests. In this investigation, we'll look at how to use Kustomize to simplify configuration management, ensure smooth deployments, and preserve consistency across several environments. Join me as we explore the possibility of simpler Kubernetes manifest management. Let's get started.
What is Kustomize
kustomize is a command-line tool that enables template-free, structured declarative configuration customisation for k8s-style objects. It allows you to deploy your kubernetes configuration file across multiple environments easily. You may utilize Kustomize to reuse one of the base files across all environments (development, staging, production, and so on) and overlay requirements for each of those environments. Kustomize is also compatible with helm and CD solutions such as argo CD.
Each directory includes a kustomization.yaml file, which is effectively a collection of resources or manifests that specify how to produce or alter Kubernetes objects.
Kustomize allows you to customize raw, template-free YAML files, allowing you to easily change settings/annotations between deployment and production.
Kustomize supports two methods for applying patches.